The Montana Jack's thin, durable sickle blade features a perfect contra angle for the most universal adaptation of all sickle scalers. Help the fight against cancer with our Pink Montana Jack R138BC. $1 of every purchase goes towards cancer research. PDT instruments are ideally weighted, featuring the most ergonomic handle with knurling to the instrument shank to provide increased comfort with less hand fatigue and pinch. PDT's focus on ergonomics greatly reduces the development of musculoskeletal disorders.