The 4187HD is a extremely tough ratchet mount made for the harshest of environments. The Standard (male) 1" x 14 thread mount also has a special cable slot which eliminates the need to remove most factory-installed connectors. Mounting dimensions are; Bolt holes: 5/16" dia., 3" x 1½" on center.
WARNING: This product can expose you to chemicals, including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Product Accessories for Shakespeare 4187-HD Stainless Steel Heavy Duty Ratchet Mount

SKU: SS414
Shakespeare 414 Shim Kit for 4186, 4187, 3187 & 6187
Shakespeare Shim Kit for 4186, 4187, 3187 and 6187 Ratchet Mount. Kit includes Four (4) Shims, two (2) with front/back slope and two (2) with side/side slope. Each shim adds a half-notch (5°) tilt.