Lenox Tools 1779805 6L Quick Change Arbor with 3-1/4-Inch Pilot Drill Bit for Hole Saws 48-11-1850 which is a quick-change system

which is a quick-change system for tool-free wheel changes

Capability to chain an additional panel (up to 120W) to collect more solar power and increase charge times

Its strong aluminum housing and the two V grooved measuring surfaces

reducing premature breakage

2X Life over Carbide Teeth Blades

Lenox Tools 1779805 6L Quick Change Arbor with 3-1/4-Inch Pilot Drill Bit for Hole Saws 48-11-1850 which is a quick-change systemLenox Tools 1779805 6L Quick Change Arbor with 3 1 4 Inch Pilot Drill Bit for Hole Saws Made in the USA or Imported Hardened carbon steel for strength Compatible with 3 8" or larger hex shanks Fits 20L 96L hole saws in 1 1 4" 6" sizes Features a quick change arbor