Quantity: come with 50 pack rubber bands Black. Size: #84 flat length is approx. 9 cm/ 3.55 inches,12 mm/ 0.5 inch in width and 1.5 mm/ 0.05 inch in thickness. Material: made of quality rubber,with strong elasticity and stretch. High stretchy: these rubber bands have good elasticity, can help to avoid the strain and injury associated with repetitive banding tasks. Rubber bands: can be used to bundle office supplies, trash cans, folders, furniture, DIY art craft in daily life. AMUU Rubber Bands Size #84 black Elastics Bands 50 pack wide Thick Rubber Bands for office supplies File small Rubber Band strong Measurements:3-1/2" x 1/2''