Driving features Hexalobular (TORX) T30. STAINLESS STEEL GRADE A2 BUTTON FLANGE BOLTS. Material technical A2. HOW TO CHOOSE YOUR BOLT IS ON PHOTO 2. IF YOU SELECT QUANTITY 1 - YOU WILL RECEIVE 1 BOLT, IF YOU SELECT QUANTITY 10 - YOU WILL RECEIVE 10 BOLTS ETC.