3Pcs 3/8" Carbide Square End Mill For Steels, Hrc 55 Deg, 4 Flute,, Metal More Product Features APPLICATION -Smileray Carbide end mills can be Applicable with copper, copper alloys, cast iron, steels, carbon steels, alloy steels, pre-hardened steels, hardened steels, and stainless steel materials. Best use for materials HRC less than 50. AlTiN Coating: AlTiN, with high aluminum content provides excellent hot hardness and oxidation resistance. HIGH-PERFORMANCE MATERIAL - Smileray Carbide end mill for steels is made from micrograin carbide, which gives it exceptional toughness, durability, and machinability. End mill can perform brilliantly and a excellently value. Highly optimized carbide and coating pairing means superior wear and chipping resistance in your cutting applications. CUSTOMER CARE: Smileray high quality milling tools will be a good helper at work. If any product problems upon receiving, please let us know. We will help you within 24 hours. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!