Bosch hs2164 - details from manufacturer website:
Hammer Steel 1 1/8 Hex, Chisel, Overall Length 20 1/2 In, Blade Width 3 In, For Use With 1 1/8 Hex Demolition Hammers, Application 60 Degree Cutting Angles To Clean Concrete, Scale, Rust, Cut Troughs And Some Asphalt
Application: 60 Degrees Cutting Angles to Clean Concrete, Scale, Rust, Cut Troughs and Some Asphalt Item: Hammer Steel 1 1/8 Hex
Type: Chisel Overall Length (In.): 20-1/2
Blade Width (In.): 3 Zoro Number: G0825133
Bosch hs2167 - details from manufacturer website:

Product Description
1 1/8 In. Hex Drive Breaker Hammer, Asphalt Chisel, Overall Length (In.) 19, Length (In.) 17, Blade Width (In.) 5, Application Cuts Asphalt or Hard Ground (Not for Concrete)
Technical Specifications:
Application: Cuts Asphalt or Hard Ground (Not for Concrete)
Item: 1 1/8" Hex Drive Breaker Hammer
Type: Asphalt Chisel
Overall Length (In.): 17-1/2
Length (In.): 17
Blade Width (In.): 5
Mfr Number: HS2167