193 - Sockets and Accessories44 - Wrenches30 - Striking and Struck Tools15 - Pliers30 - Screwdrivers22 - Miscellaneous Tools 334 pieces. 1/4", 3/8", 1/2" drive tools. Designed for fastener sizes 1/16" - 1-1/2", 9 mm - 19 mm. Enhanced version of Proto® J99670 Advanced Maintenance Set. Includes PROTO® 550S 27" ROLLER CABINET - 12-DRAWER, SAFETY RED AND GRAY Model# J542742-12SG Includes PROTO® 550S 27" TOP CHEST - 8-DRAWER, SAFETY RED AND GRAY Model# J542719-8SG PROTO 334 PIECE MASTER ADVANCED MAINTENANCE SET WITH 27" 12-DRAWER ROLLER CABINET AND 8-DRAWER TOP CHEST