Includes 21 pieces.8160-1/2 extension bar, 1/2", 125 mm.8162-1/2 extension bar, 1/2", 250 mm.8165-1/2 adaptor, F 1/2" to M 3/8".8166-1/2 1/2" universal joint.7800SM-10 1/2" socket hex 10 mm.7800SM-11 1/2" socket hex 11 mm.7800SM-12 1/2" socket hex 12 mm.7800SM-13 1/2" socket hex 13 mm.7800SM-14 1/2" socket hex 14 mm.7800SM-15 1/2" socket hex 15 mm.7800SM-17 1/2" socket hex 17 mm.7800SM-18 1/2" socket hex 18 mm.7800SM-19 1/2" socket hex 19 mm.7800SM-20 1/2" socket hex 20 mm.7800SM-21 1/2" socket hex 21 mm.7800SM-22 1/2" socket hex 22 mm.7800SM-24 1/2" socket hex 24 mm.7800SM-27 1/2" socket hex 27 mm.7805SM-16 1/2" socket hex deep 16 mm.7805SM-21 1/2" socket hex deep 21 mm.8150SL round head reversible ratchet, 1/2", 72 teeth/5° action angle, slim head for narrow places.Foam available with laser marked