Please Support Our American Small Business - American proudly made and sold quality blade products 20 Blades bulk packed in poly bag. Specification: Total Quantity: 20pcs Blade length: 24mm±1mm Blade diameter:2mm Material: Stainless steel cemented carbide Package includes : 15pcs 45 Degree (Red Cap), 5pcs 60 Degree (Blue Cap) : Compatible with: All machnes; Explore Air, Air 2, Maker, Expression, Cudldle and more if not sure please contact us for help. Note: If you feel the blades dull at the first time of using, please manually adjust angle blade with the desired media properly. By setting the pressure settings in your software. 100% Satisfaction Guarantee: We back our product 100% for its durability and precision. In the event you have defective ones, please contact us immediately, we will send you FREE replacements or refund your money.