Glass Technology's Diamond Clear Resins are manufactured to very specific guidelines which has resulted in over 24 years of quality and consistency our customers expect. Save on Glass Technology's Carbide Tungsten drill bits with the purchase of any three bottles 15cc bottle of resin. Remember, Glass Technology resins are BSI certified and tested for quality assurance. (BE SURE TO SPECIFY WHICH 3 BOTTLES OF RESIN AND DRILL BIT PACK YOU WOULD LIKE TO ORDER IN THE NOTES SECTION). Total cost 77.85.