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Due to the national holidays as Golden Week, we will close 2018/4/28~2018/4/30 and 2018/5/3~2018/5/6.
This may cause delays with our responses. Thank you for your understanding.
Prepared Hole Drill Diameter (mm): 3.5, Head Diameter D (phi mm): 7.2, Dimension d (mm): 4, Cross Hole Number: No.2, Shape: Pan head, Usage: When using the pad((Padding method) [block, hollow building materials and mortar for ceramic siding] 1. Make pilot holes by using drill 2. insert pad into bottom hole. 3. Screw it using a screwdriver. If you do not want to use the pad (conventional method) 1. Drill the pilot hole. Screw it using a screwdriver.Do not tighten more than necessary. (If you overtighten and the screw will not work, please use the padding method to remove the screw.)