What do the rubber grommets do
1-1/8" x R1/8" Classical W/B Bit
Durable aluminum construction
Fan Diameter: 152 mm (6")
How much vertical adjustment does the guard provide
DRILL BIT SET TITANIUM QUICK CHANGE 8PC Drill Bits What do the rubber grommetsB3553 8 Pc Quick Change Chuck & Titanium Drill Bit Set For easy, fast and precise drilling Fast, one handed bit changes Split point design for heavy duty use Includes: quick change chuck and drill bits: 1 16", 3 32", 1 8", 5 32", 3 16", 7 32", and 1 4" To load, push bit into chuck until it clicks into place To release, pull forward on collar and remove bit For general purpose drilling in a variety of materials including wood, metal and plastics Kit