1/2" metric deep bi-hexagonal socket wrench from the BAHCO brand that has a grooved body to turn loose screws manually, fine polished finish. High-performance alloy steel material, contains the Dynamic-Drive™ and its packing unit is blister packed with product information Maximum load and torque distribution due to additional side area Socket diameter is 18 mm, L dimensions are 82.6 mm, D1 dimensions are 25.2 mm, the dimensions in D2 are 23.4 mm and the dimensions in T are 13.5 mm while its approximate unit weight is 164 gr.