1.PACKAGE INCLUDED 5pcs of hole saws: Φ30mm(1.18'), Φ40mm(1.57''), Φ68mm(2.68''), Φ82mm(3.23''), Φ100mm(3.94''); 2PCS SDS connecting rod: SDS PLUS 300mm(11.81''), SDS MAX 300mm(11.81''); 2PCS pilot drill bits 110mm(4.33'') 2.MATERIAL: The hole saw kits are made of high quality tungsten steel and carbide carbide YG8,wear resistant and durable. 3.VERSATILE The kit is perfect for working on Brick, concrete, cement, stone, tiles, mixed brick wall, foam wall. It is suitable for all rotary hammer drills with SDSPLUS or SDS MAX holder. 4.CARRY CASE – Supplied in a light, portable plastic case for easy transport and storage.The whole kit is fixed in the slots of the case Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store