Set Screw for A-dec Century Water Coolant Valve - 4-40 x 1/8 SST (A-dec #007.010.00)Replaces 24V Volt/150 Watt bulbs in older 6300 lightsA-dec and Century are a registered trademark of A-dec, Inc.DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec products.