Teng Ratchet Extendable 1 2 inch Drive 45 teeth generator 390 Pieces Replacement Packs Available Size:20in 390 Pieces Replacement Packs Available Part # Size Pack Qty C380 1 8G Screw 31 32 x 7 16 20 C380 2 10G Screw 13 16 x 1 2 20 C380 3 6G Screw 21 32 x 7 16 20 C380 4 10G Screw 1 2 x 11 16 20 C380 5 1 8 Stud 1 2 x 5 16 50 C380 6 3 32 Stud 7 16 x 1 4 50 C380 7 3 16 UNC 5 8 x 3 8 50 C380 8 3 16 Stud 5 8 x 3 8 50 C380 9 10G Screw 15 32 x 11 16 20 C380 10 8G Screw 21 32 x 7 16 20 C380 11 8G Screw 13 32 x 11 32 20 C380 12 10G Screw 21 32 x 13 32 50 5 Step Rust Prevention and Powder Coating 45 teeth 8° Increments With an extendable ratchet the user has several lengths to choose from without going back to the tool box for another tool saving space in their storage