McMaster 2936T81 Galvanized Steel U Bolt, with Mounting Plate, 5 16" 18 Thread Size, 2 1 2" ID 3060T78 Socket Point Styles Included 12 Socket Point Styles Included 12 Finish Chrome Impact Rated No Number of Pieces 16 Measurement Type SAE Drive Type Hand SAE or Metric SAE Insulated No Tether Style Tether Capable Includes Flex Sockets No Non Sparking No Container Type Metal Box Reversing Yes Head Type Flexible Piece Count Range 2 to 25 Number of Standard Sockets 13 Tether Ready Sockets Not Tether Capable Includes Standard Sockets Yes Includes Deep Sockets No Includes Socket Bits No Socket Shape 12 Point Locking No Tether Ready Drive Tools Not Tether Capable Grip Style Knurled Includes Wrenches Yes Flex Socket Count Style None Includes Drive Tools Yes Spacer washer 253 SVHC) Compliant RoHS Compliance RoHS 3 (2015 863 EU) Compliant Schedule B Number 731815 A mounting plate provides a more secure hold at the mounting surface