Table 9: "Flat Top" Eights

• These are smaller than average.
• The flat top allows reducing the size somewhat without reducing friction as much as shrinking a round rope hole would.
• The flat top reduces rope twisting slightly, but not much: the main twisting still comes from the rope passing around the shaft.
• The SMC eights are milled from plate, the others are forged. All of these are made from an aluminum alloy.
• Some are unfinished, some are soft anodized, and some are hard anodized.
• In this table, special shading in the ID field background indicates eights that are particularly similar except for markings and possibly finish.

Image	ID	Device	Total Height	Total Width	Maximum Thickness	Rope Hole Height	Rope Hole Width	Thickness at Top	Shaft Length	Minimum Shaft Width	Eye Height	Eye Width
	3238	Black Diamond Super 8, Version A	122	74	13	44	53	7	33	25	25	26
	304	Black Diamond Super 8, Version B	120	75	13	43	53	7	33	25	25	26
	3247	Black Diamond Super 8, Version C	122	75	13	44	54	7	34	25	25	27
	3245	Black Diamond Super 8, Version D	121	75	13	44	54	7	33	25	25	27
	3064	CanyonZone Canyon8	121	75	12	43	54	9	33	25	25	27
	1107	Krok 8 Square	127	75	10	49	50	10	33	27	21	32
	458	Lucky Geni, Version A	128	69	16	50	50	11	32	26	26	28
	1036	Lucky Geni, Version B	129	72	15	49	50	11	32	27	26	27
	909	Metolius, Version A	129	72	15	49	49	11	33	27	25	26
	910	Metolius, Version B	129	72	15	49	49	11	33	27	25	26
	3145	PBI	130	735	12	48	51	12	43	23	16	31
	323	Petzl D01	141	72	16	48	50	12	36	26	20	32
	324	Petzl D02, Version A	124	72	12	48	49	13	36	26	20	32
	4019	Petzl D02, Version B	126	73	12	48	50	12	36	26	20	32
	489	Russian, Version A	134	74	12	53	52	12	41	28	30	21
	1365	Salewa G2, Large (Model F8L)	145	72	18	51	50	11	39	30	28	19
	1337	Salewa G2, Medium (Model F8M)	136	72	13	49	50	11	30	27	29	20
	1336	Salewa G2, Small (Model F8S)	121	68	13	45	45	9	26	28	25	17
	1020	SMC Mountaineering 8	118	75	10	40	50	10	28	25	27	21
	338	SMC Straight Eight, Version A	125	74	17	48	52	12	36	26	19	32
	339	SMC Straight Eight, Version B	126	75	10	48	50	9	33	26	20	32
	1374	SMC Straight Eight, Version C	125	75	10	48	50	10	33	25	20	32
	3159	SMC Straight Eight, Version D	125	75	9	48	50	9	33	26	20	32

Table 10: Full Size, Milled Plate Eights

• These are typical eights in size and shape
• The Manaraga, Version B is steel, and the others are aluminum.

Image	ID	Device	Total Height	Total Width	Maximum Thickness	Rope Hole Height	Rope Hole Width	Thickness at Top	Shaft Length	Minimum Shaft Width	Eye Height	Eye Width
	2544	Climb Right	145	76	11	51	51	11	43	25	25	25
	1106	Krok 8 Classic	140	74	10	48	48	10	41	28	25	25
	964	Manaraga, Version B	136	73	11	47	47	10	42	27	23	23
	3375	Manaraga, Version C	139	73	10	48	48	10	42	28	24	24
	1304	Rock Exotica Sport Eight	143	74	12	50	50	12	44	26	25	25
	488	Russian "Buba"	141	73	14	47	47	14	45	24	23	23
	3376	Sinto	145	76	10	50	50	10	43	32	26	26

Table 11: Large Milled Plate Eights

• These are larger than normal. I use a height of >150 mm as the criteria for placing an eight into this category.
• These eights are from an aluminum alloy plate.

Image	ID	Device	Total Height	Total Width	Maximum Thickness	Rope Hole Height	Rope Hole Width	Thickness at Top	Shaft Length	Minimum Shaft Width	Eye Height	Eye Width
	994	Likin	152	76	13	80	52	13	28	26	33	33
	567	Russ Anderson, Version A	160	88	13	63	63	12	48	31	28	28
	300	Russ Anderson, Version B	161	87	13	61	61	13	49	30	28	28
	330	Russ Anderson, Version C	159	87	13	61	61	13	49	30	28	28
	331	Russ Anderson, Version D	155	84	13	60	60	13	52	31	20	30
	332	Russ Anderson, Version E	155	84	13	60	60	13	52	39	20	30
	1276	Supra	171	85	16	54	54	16	63	32	23	23
	1424	Unknown #2	167	81	16	51	51	16	66	23	19	19

Table 12: Guide Hole Eights

• These eights have projections inside the rope hole that guide the rope to some degree or another.

Image	ID	Device	Total Height	Total Width	Maximum Thickness	Rope Hole Height	Rope Hole Width	Thickness at Top	Shaft Length	Minimum Shaft Width	Eye Height	Eye Width
	926	Fixe Suprem	124	77	12	38	54	10	37	25	25	29
	589	Snap Large Bottle Opener	134	87	12	37	65	12	47	22	25	25
	587	Snap Small Bottle Opener	118	80	10	34	60	10	41	20	19	19