Mastergrip Universal Pass-Thru Ratchet and Socket Set - 50-Pc., Model# 55315 Pass-through ratchet and socket design reaches long bolt stock, studs and deep well applications Universal sockets drive multiple sizes and styles of SAE and metric fasteners, even rounded or damaged nuts and bolts Reversible 1/4in. 3/8in. and 1/2in. ratchets feature knuckle-saving offset handles Includes extension bars as well as adapters to drive conventional style sockets Durable storage case keeps tools clean, safe and ready to use