The off-set attachment permits working near edges and walls. The dimension across corners is 11 mm, The attachment can be adjusted in 12 different positions, Lockable 1/4" universal bit holder for all standard screwdriver bits, 3-piece set: "Quick" off-set attachment, anti-vibration handle, spacer bolt, Suitable for all Metabo LTX "Quick" machines, Suitable for Metabo BS 18 LTX BL Q I; SB 18 LTX BL Q I; BS 18 LTX-3 BL Q I; SB 18 LTX-3 BL Q I, GB 18 LTX BL Q I; BS 18 LTX Quick