AJK Offroad machines our tubing clamps / 6 bolt couplers in house. Our tubing couplers use six 1/4-28 SHCS to hold the two halves together. These work great for adding additional items to your tubing that may need to be unbolted from time to time.
Click for 2.00? Tubing Clamp spec sheet. SKU #200241
Click for 1.75? Tubing Clamp spec sheet. SKU #200292
Click for 1.50? Tubing Clamp spec sheet. SKU #200293