4: easy to read the scale on syringe 1ml29g x 1/2" 1ml30g x 1/2" 1ml30g x 5/16" 1ml31g x 1/2" 1ml31g x 5/16" U-400.5ml29g x 1/2" 0.5ml30g x 1/2" 0.5ml30g x 5/16" 1ml29g x 1/2" 1ml30g x 1/2" 1ml30g x 5/16" 1ml31g x 1/2" 1ml31g x 5/16" Blister or pe bag individually, 100 pcs per bag or per box, 2000 pcs per carton, 63 x 37 x30cm