Thinset Removal Bit 4 in. x 7.5 in. Round Shank Scaling Chisel 4TRBRS - The Home Depot
Amazon.com: RANSHOU Japanese Chisel 42mm 1-5/8" Wide Chisel Oire Nomi, Professional Wood Chisel for Woodworking, Japanese Red Oak Handle, Made in JAPAN : Everything Else
Vintage FG Pearson & Co 1/2” Wide Chisel | eBay
Stanley FATMAX 2 in. Wide Thru-Tang Wood Chisel 16-981 - The Home Depot