Stahlwille603792 427QR/3 12011001 Bit Extension Bar Drive 3/8" (10 mm) 76 mm - Stahlwille 12011003, Extension with quick-release safety lock. Design according to DIN 3123 and ISO 3316. Stahlwille 427QR/10 12011003 Bit Extension Bar Drive 3/8" (10 mm) 240 mm