... blade :4,5,6,7,8,9,... 1,Application:1,Suit for drilling medium to medium-hard formations ... 3 wing bit60 75 94 113 1331-18Arc pillar60 75 94 113 1334-18Many wing scraper60 75 94 113 133 ... monthDelivery Timewithin 7-15 work daysFAQ(Frequently Asked Questions)1. How to order the products? Answer: Send ... technology ensuring the quality satisfy international request. 12 1/4" metrix body /steel body PDC bit