Models of the Bosch Bulldog SDS hammer are advertised as "1 inch" or " 1 1/8 inch". What do those dimensions refer to?
-obviously not to the diameter of the bit shaft since the following examples both take "SDS plus" bits.
https://www.lowes.com/pd/Bosch-Bulld...Hammer/1082989
https://www.lowes.com/pd/Bosch-Bulld...mer/1000163219The Bosch 11255VSR 1 In. SDS-plus® Bulldog™ Xtreme Rotary Hammer is a versatile, handy tool
The Bosch GBH2-28L SDS-plus® Bulldog™ Xtreme Max 1-1/8 In. Rotary Hammer features a powerful 8.5 Amp motor and KickBack Control.