Handled Eccentric Cam Ascenders
Double-Rope

This section includes mechanical ascenders consisting of a shell or frame and an eccentric cam assembly attached to the shell/frame at a single pivot point. The shell/frame is open on one side to allow admittance of the standing rope. The shell/frame below the cam is enlarged to provide a handle. No sling attachment points are provided on the cam.

These ascenders are generally larger and heavier than the handleless eccentric cam ascenders; conversely, they are easier to manipulate, particularly with gloved hands. I don't normally wear gloves ahile ascending (except in cold conditions), but many people prefer to do so.

I split the Handled Eccentric Cam Ascenders into these four groups:

• Cast Frame
• Milled Frame
• Stamped Frame
• Double-rope

Cavers and climbers rarely need to climb a doubled rope and so they would not likely choose one of these as their main ascender, but arborists and other working professionals have found uses for devices like these.

[ More about Eccentric Cam Ascenders | More about Ascender Handles | Eccentric Cam Classification ]

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓	Channel Diameter ↓	Cam Angle ↓	Tooth Pattern ↓
	1531	Clark Single-handled Dual Ascender	Made from 2 Petzl Ascensions joined, rope retainer, safety block pin, noncommercial	Jim Clark, 2009	457	176	89	41	649	15.4	30	(3.1.4)(1S1.1S0.2S2)^2(1S1)(2.3)
	1976	Climbing Technology Quick’Arbor	Double-rope, stamped frame, rubber grips, 2 pear top & 5 round bottom holes, plastic rope retainers, stamped cam stops, hybrid cam /w sloping teeth, double-pin safety with pivot on side of cam	Jim Goodall Equipment, 2014	498	222	161	57	2019	15.7	31	(3.2.4)(1H1.2)^3(3.2)
	1934 1940	CMI Expedition Twin, Version A	Double-rope, stamped frame, plastic grips, round top & 2 round bottom holes, pin cam stops, hybrid cam /w straight teeth, split ring & cable cam trigger, plastic safety levers in cam channel, QR pin safety	Troy Kossick, 2012 Alex Zimmerman, 2013	429	208	106	62	1358	16.5	25	(4.3)^5(4)
	2279	CMI Expedition Twin, Version B	Double-rope, stamped frame, plastic grips, round top & 2 round bottom holes, pin cam stops, hybrid cam /w straight teeth, split ring & cable cam trigger, plastic safety levers in cam channel, QR pin safety	Bob Thrun Collection, 2017	427	208	106	62	1358	16.5	25	(4.3)^5(4)
	3439	CMI Expedition Twin, Version C	Double-rope, stamped frame, plastic grips, round top & 2 round bottom holes, pin cam stops, hybrid cam /w straight teeth, split ring & cable cam trigger, safety levers in cam channel, QR pin safety	CMI, 2021	437	208	104	62	1336	16.5	25	(4.3)^5(4)
	1968 2285	Jumar Tree	Dual-handled double-rope, extruded frame, triangular top and round bottom holes, open-web cam /w straight teeth, tab safety below cam	Bob Thrun, 2014 Bob Thrun Collection, 2017	505	183	157	57	1641	16.0	29	(4.H)^2(3.H)^2(3.2.2)
	1516	Kong-Bonaiti double rope	Double Rope, stamped handle /w 2 riveted eccentric cam ascenders, oval & D top holes, round bottom hole, stamped cam stops, asymmetrical open-web cams /w sloping teeth, tab safety below cams	Rostislav Burdenyuk, 2009	397	209	92	56	1070	15.4	30	(3)(4.H)^2(3.H)^2(2.2.1)
	1523 2291	Kong Trender	Dual-handled double-rope, stamped frame, oval top holes, round bottom holes, stamped rope retainer /w carabiner, asymmetrical open-web cams /w sloping teeth, tab safety below cams	WesSpur Tree Equipment Bob Thrun Collection, 2017	613	220	181	51	1707	15.2	30	(3)(4.H)^2(3.H)^2(3.2.2)
	1529 2292	Kong Twin, Version A	Dual-handled double-rope, stamped frame, round & D top holes, round bottom hole, stamped cam stops, asymmetrical open-web cams /w sloping teeth, pin safety below cams	Simon Holmes, 2009 Bob Thrun Collection, 2017	468	207	166	50	1707	16.3	29	(3)(4.H)^2(3.H)^2(3.2.2)
	3496	Kong Twin, Version B	Dual-handled double-rope, stamped frame, round & D top holes, round bottom hole, stamped cam stops, asymmetrical open-web cams /w sloping teeth, pin safety below cams	JohnC Raaf, 2021	467	208	166	50	1741	16.3	29	(3)(4.H)^2(3.H)^2(3.2.2)
	210 2290	Kong Twin, Version C	Dual-handled double-rope, stamped frame, round & D top holes, round bottom hole, stamped cam stops, asymmetrical open-web cams /w sloping teeth, tab safety below cams	WesSpur Tree Equipment, 2007 Bob Thrun Collection, 2017	466	204	165	51	1707	16.3	28	(3)(4.H)^2(3.H)^2(3.3.2)
	3403	Krok G2 3601_262.67	Dual-handled double-rope, stamped frame, round & D top holes, round bottom hole, stamped cam stops	Krok, 2021	561	221	163	69	2490	15.6	31	(3.2.2)(1H1.2)^3(2.3.2)
	275 2278	Petzl Ascentree, Version A	Dual-handled double-rope, stamped frame, rubber grips, oval top & 2 round bottom holes, stamped cam stop, semi-open web cam /w straight teeth, plastic safety below cam	On Rope 1, 2009 Bob Thrun Collection, 2017	397	190	169	45	1436	15.0	30	(3.1.4)(1S1.1S0.2S2)^2(1S1)(2.3)
	2041	Petzl Ascentree, Version B	Dual-handled double-rope, stamped frames riveted together, rubber grips, 2 oval top and 1 subtriangular bottom holes, semi-web cam /w sloping teeth, plastic safety below cam	On Rope 1, 2016	339	195	169	42	1388	14.5	32	(3.4)(1S1)^2(2S2)(1S1)^3(2.3.4.3)
	3588	S.E.Peak SA–205D	Dual-handled double-rope, stamped frames riveted together, rubber grips, 2 oval top and 1 subtriangular bottom holes, semi-web cam /w sloping teeth, plastic safety below cam	Amazon.com, 2023	387	206	187	41	1581	14.7	30	(3.4)(1S1)^2(2S2)(1S1)^3(2.3.2.2.3)
	3484	Vertical (Вертикаль) Butterfly (Бабочка)	Dual-handled double-rope, stamped frame, oval top holes, 2 round bottom holes, pin cam stops, hybrid cam /w sloping teeth, plastic safety below cam	Artyom Babin (Артём Бабин), 2021	459	184	156	55	1585	15.0	34	(3.4)(1S1.2S2)^2(1S1)^2(3)

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