Front View	Rear View	Side View

Technical Details

I acquired my Krok Spider from Gear4Rocks in 2012. Gear4Rocks is the same company as Krok, the only difference is that the Krok trademark sells gear only inside the Ukraine, and the Gear4Rocks trademark was created to spread Ukrainian gear around the world.

My Krok Spider is 171 mm. tall, 123 mm. wide, 56 mm. thick, and weighs 629 g.

The spider be made from four steel pieces welded together: two 10 mm. rods, a riser, and a bollard assembly. The rods are bent and welded to form two irregular upper slots and two subtriangular lower eyes. The slots are ~85 mm. tall and have a 36 mm. width near the top. Due to imprecise manufacturing, the eyes are not the same size: one is 37 mm. tall and 24 mm. wide, the other 31 mm. tall and 17 mm. wide. The riser is made from 4 mm. plate. The bollard assembly is 30 mm. long and 27.7 mm. in diameter with a 19.4 mm. central hole. It has two 8.5 mm. wide, 2.5 mm deep U-shaped rope grooves turned on the exterior. The ends of the bollard are cut so that it tapers to the back plate. The Spider is painted with a thick mottled paint.

There are no markings on this descender.

Comments

This descender is designed for double rope 8 to 12 mm. rope, but also works on single rope.

The device is rigged by bringing a bight through the back plate and over the bollard. There is nothing to keep the rope on the bollards; however, a carabiner can be clipped through the bollards to keep the user from entering disconnected free-fall if the rope should slide off. The large horns provide convenient tie-off points.

I dislike the painted finish because the paint wears off and leaves a mess on the rope.