THREADED TUBE INSERTS FOR SQUARE TUBING M8 PACK of 4 /8/12
ID 23mm M8 overall base is 25mm. ID 30mm M8 overall base is 35mm. ID 35mm M8 overall base is 38mm. ID 40mm M8 overall base is 45mm. ID 50mm M8 overall base is 55mm. Sets of 4/8 or 12 Threaded Inserts for use with box sections.