OMT 8pc 1/2" Drive Torque Limiting Extension Bar and Deep Impact Socket Set, Torque Extension Tool Set with 90-120 ft-lb Torque Sticks, Impact Torque Limiter Set with 17 19 21mm 7/8" Sockets :
Lisle 12210: 3-Piece Stubby Torque Stick Set | 19 mm & 21 mm @ 100 ft.-lbs. | 7/8 in. @ 120 ft.-lbs. | Plastic Case | Sold as a Kit - JEGS
US PRO INDUSTRIAL 5pc 1/2 Dr Torque Limiting Sticks Socket Extension Bars 6864