Maxdrill Cheap Price Hot Sale Rock Tools R32 45mm Thread Button Bit for Drilling Mining and Quarrying Product Description Dimensions   Flushing hole(mm) Buttons(mm) Angle Class Part No mm in Front No Size Gauge No Size Front No Size Gauge No Size 45 1 3/4 3*5 1*5 3*8 6*10 30 ° - 3045R32F09 48 1 7/8 3*5 1*5 3*9 6*10 30 ° - 3048R32F09 51 2 3*5.5 1*5.5 3*9 6*10 35 ° - 3051R32F09 54 2 1/8 3*6 1*5.5 3*10 6*11 35 ° - 3054R32F09 57 2 1/4 3*6 1*6 3*10 6*11 35 ° - 3057R32F09 Remarks: Hemispherical-66(Usually for very hard rocks) Ballistic-65(Usually for medium hard rocks) Semiballistic-64(Usually for medium hard rocks) Conical-67(Usually for soft rocks) FAQ The information you may like to know before order: 1.  Methods of Payment:    T/T (Telegraphic Transfer) or Western Union or L/C at sight 2.  Handling time for an order    Based on order quantity, normally it takes 25 days for production.    Only 2  or 3  days if we have stock on your request size. 3.  Shipping way    Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air    Bulk order: we suggest by air or by sea. 4.  Quality Control    We have our own experienced QC.    There will be strict inspection and testing for every order before shipping out. 5.  After Services:    a. Our sales team will response for your question within 24 hours (Holidays Excluded)    b. Technical Support will be available in any time    c. Free replacement will provide once the failure confirmed caused by our product quality