Black Diamond ATC-Pilot-Black. Providing an added level of security to your belay the ATC Pilot threads similarly to other tubular belay devices and accommodates ropes from 8.7-10.5mm. The durable steel braking surface has no moving parts and the smooth and secure control allows for gradual lowering. With an easy rope payout the ATC Pilot makes single-pitch projecting burns less tiring for the belayer and more secure for the climber. Specifications for Black Diamond ATC-Pilot: Manufacturer: Black Diamond Color: Black Fabric/Material: Steel Construction Weight: 1 lb Rope Capacity: 8.7 mm - 11 mm Belay Type: Manual Catch Application: Sport Climbing Features of Black Diamond ATC Accommodates ropes from 8.7-10.5 Provides an added level of security to single pitch belays Smooth rope payout Controlled lowering Steel construction Ergonomic non-slip surface Single rope use Black Diamond ATC-Pilot-Black