Matching Step Drill Bit Available: RAINPAL SDB125 a.co/d/iQ30Gv7
Three large steps(7/8", 1-1/16" and 1-1/4")(8mm Height), works for most RAINPAL Products.
For RAINPAL RBS005, Please use the 1nd step(7/8")
Step drill bit makes cleaner hole with no or minimum burs.
Use with power drill for more control. Impact drive will be too aggressive.
Designed to use on Plastics. Will not last long on steel.
Click "Visit the RAINPAL Store" then "FITTING_ETC" to purchase or use this link: a.co/d/iQ30Gv7