Brand: Astro Pneumatic Tool Company Manufacturer's Part Number: 78818 Part Type: Sockets and Drive Bits Product Line: Astro Pneumatic Tool Company Torque Limiting Extension and Protective Impact Socket Combo Sets Summit Racing Part Number: APT-78818 UPC: 745227022397 Socket/Bit Style: Standard Impact Rated: Yes Number of Pieces Included: 8 Socket/Bit Piece Count: 4 Ratchet Included: No Extensions Included: Yes Swivel Extension Included: No Socket Material: Chromoly Socket Finish: Multicolor anodized Case Included: No Quantity: Sold as a set. Notes: Includes 90， 100， 110， and 120 ft/lbs. torque limiting extensions. Socket Drive (application): 1/2 in. Deep Well Socket Type: 6-point Application Notes: Lug nut impact socket with protective sleeve. Additional Information Deep Well Socket Size 17mm 19mm 21mm 22mm Astro Pneumatic Tool Company Torque Limiting Extension and Protective Impact Socket Combo Sets Astro Pneumatic Tool Company's torque limiting extension and protective impact socket combo sets include common torque limits and socket sizes for wheel mounting. Sockets are made of chromoly material with multi-color anodized finishes. The lug nut sockets feature protective sleeves and inserts to prevent wheel damage. All tools are all color-coded for quick reference.