Wera 8100 SA/SC 2 Zyklop Socket Wrench Set 1/4" 1/2" Drive Metric 0516078500143 piece Zyklop set in robust metal case: Zyklop ratchet with 1 4"drive and Zyklop ratchet with 1 4"drive. The 72 fine pitched teeth enable a low return angle of only 5. The ratchet head pivots freely and can be locked into any position by using the slide switch that is positioned on either side. It is even possible to work conveniently in very confined and difficult to access areas with enhanced hand clearance. The predefined locking positions at 0,