Lock Mortice Chisels – William Marples and Sons, Ltd.
2 1/2" (63mm) Firesharp Masons Pitching Tool
Guide To Wood Chisels for Woodworking
Mayhew 4 in. x 7 in. Brick Set Chisel 35202 - The Home Depot
Utoolmart Wood Chisel for Carpentry 16mm Width Flat Carving Head High Carbon Steel and PVC Handle for Woodworking Hand Tool : Amazon.co.uk: DIY & Tools