Snap-on Tools USA NEW RED 52-Piece 1/4 Drive 6-POINT Metric & SAE Shallow & Deep Essential Socket, Ratchet & Extension Sets in RED Foam Organizers. Set Model #’s. RAT108ESSFR? 8-Piece Ratchet & Extension Set. 122STTMMFR? 22-Piece Metric Socket Set. 122STTMFR? 22-Piece SAE Socket Set. TXM72 = 1/4 Bit Locking Flex-Head Ratchet. TLLF72 = 1/4 Extra-Long Flex-Head Ratchet. T72 = 1/4 Fixed-Head Ratchet. T72MP = 1/4 Multi-Position Indexing-Head Ratchet. TMU8B = 1-1/8 Friction Ball Universal Adapter. TMXK2 = 2 Extension. TMXK4 = 4 Extension. TMXK110 = 11 Extension. SAE Shallow. SAE Deep. Metric Shallow. TMM5.5 = 5.5mm. Metric Deep. STMM5.5 = 5.5mm.