Yates Gear Isc D5Y Descender/Belay DeviceYates Gear ISCD5Y The D5Y Descender allows for controlled descent at different speeds. A user can move slowly, or get going much quicker than they can on a Petzl ID. However, it still has the anti panic in case a user pulls the handle too hard. Handle spins all the way around, and gives audible clicks as it resets. NEW handle position is approx. 25 degrees back from the original prototype position allowing for a more ergonomic position for the user.