304 Stainless Steel Magnetic Clasps, Round, Stainless Steel Color. Size: about 5.5mm wide, 12mm long, hole: 2mm. Stainless Steel magnetic clasps consists of two sides. When put them nearly, they can be absorbed together for their magnetic characteristic. Get this 20 Sets 304 Stainless Steel Magnetic Clasps for $11.54 @PandaHall.