YC0505B Material: Iron Oval shaped magnetic stones which produce a buzzing sound and vibration effect when playing with them Great for hand eye coordination A fantastic stress reliever Compact size for ease of carrying everywhere Great small gift for children and adults Quantity: 2 Dimensions: 4 x 1 x 1 cm   Package Details Weight: 50.29 g Size: 4.00*2.5*1.00 cm Package Includes * Oval Magnetic Stones Toy Set of 2