CHKJ Tin Foil Tool AB Film with Groove on the Side and No Groove on the Side Locksmith Tools 3-2 Slotted 4-2 Not slotted Notice: 3-2 The side is grooved 4-2 No groove on the side The tin foil inserts are consumables. The quality of this set of tin foil inserts is definitely better than other imitation tin foil inserts, both in terms of hardness and durability. Note: If you are a wholesaler or want to buy a large number of products, I want to cooperate with you sincerely, please contact me, I will give you a discount,thanks! As What You Choose