The is one of the following group of similar double-stop bobbins:

Image Device Upper Bollard Lower Bollard Connecting Link Safety Lever Hand Grip Hook Safety Certification Allowed
Rope Size
Weight Limit(s) Max Drop
Kong Indy Kong Indy Aluminum Aluminum Flat Bar Aluminum Extrusion Ribbed Plastic Stamped Stainless Steel EN341/A,
prEN12841/C
10-11 mm. (EN341/A)
10-13 mm. (EN12841/C)
Max. 1.5 kN. 100 m.
Camnal Down Camnal Down Aluminum Aluminum Flat Bar Aluminum Extrusion Ribbed Plastic Stamped Stainless Steel EN341 10-12 mm. Max. 150 kg. 100 m.
SOB SOB Aluminum Aluminum Flat Bar Aluminum Extrusion Ribbed Plastic Stamped Stainless Steel EN341 10-12 mm. Max. 150 kg. 100 m.
Chinese, Version B Chinese Aluminum Aluminum Flat Bar Aluminum Extrusion Ribbed Plastic Stamped Stainless Steel EN341 10-13 mm. Max. 150 kg. 100 m.
Vento Vento Aluminum Aluminum Round Bar Aluminum Extrusion Plastic /w Finger Grooves Stamped Stainless Steel EAC 10-13 mm. Max. 150 kg. 100 m.
S.E.Peak SE-218 S.E.Peak SE-218 Aluminum Forged Aluminum Flat Bar Forged Aluminum Smooth Stamped Stainless Steel EN341/A
EN12841/C
10-13 mm. 30-150 kg 200 m.
SUT SUT Aluminum Steel Flat Bar Aluminum Extrusion Ribbed Plastic Stamped Stainless Steel EN341 9-12 mm. 30-150 kg 100 m.
Ito-Rocky Ito-Rocky Aluminum Forged Steel Flat Bar Aluminum Extrusion Ribbed Plastic Plastic EN341 9-12 mm. 30-150 kg 100 m.
NewDoar NewDoar Aluminum Forged Steel Flat Bar Aluminum Extrusion Ribbed Plastic Plastic EN341 9-12 mm. 30-150 kg 100 m.
Asol Asol Aluminum Forged Steel Flat Bar Aluminum Extrusion Ribbed Plastic Plastic EN341 10-13 mm. Max. 150 kg. 100 m.
Z&W Z&W Aluminum Forged Steel Flat Bar Aluminum Extrusion Ribbed Plastic Plastic EN341 10-13 mm. Max. 150 kg. 100 m.

These descenders clearly "borrow" the autostop concept from Kong and in particular from the King Indy.

These each have a lever at the top that provides both a release-stop and a panic-stop feature. Unlike the Petzl Stop design, the stop design developed by Kong-Bonaiti and copied on these ascenders has never worked well for me. It simply does not provide enough stopping force to hold me in position, let alone arrest a rapid descent. I've been able to complete rappels on these bobbins without touching the handle, a situation that should not allow me to move.

As for the panic stop feature, squeezing the handle hard enough will slow the descent. Depending on the rope in use, this may occur whn one is tring to hold the handle in the middle position for a normal descent. I've never fully understood why people promote panicing as desirable behavior, and I find double-acting levers designed to address this questionable behavior maddening. You may like them, but if this is because you like to panic, I suggest you fullly dispense with that behaviour first and then move on to single-acting devices.

This autostop design adds unnecessary length and width to the descender. It is too complicated for my taste, with too many pivoting joints that may fail. I cannot recommend this type of stop (let alone double-stop) feature over the Petzl Stop design.

PHP DEVICE TYPE ERROR.