304 Stainless Steel Magnetic Clasps, Drum. Size: about 13mm long, 13mm wide, hole: 6mm. These fashion clasps made of 304 Stainless Steel which are corrode and rust resistance. Lightweight and sturdy enough for bracelet and necklace focal pieces. So buy this and Get 48% OFF 2 sets 304 Stainless Steel Drum Magnetic Clasps for $1.75 @PandaHall