Bu Sa Bum Nim Zach Lanham throws a straight right punch and Master Colkett (left) steps outside of it as he blocks and catches the arm (1). Colkett slips his left arm under Zach's armpit and chops into the crook of Zach's elbow bending his arm (2). Colkett tucks Zach's elbow into his armpit (3). Colkett flexes Zach's wrist with both hands (4). As Zach tries to struggle Colkett increases the pressure on Zach's wrist completely controlling him (5).

CHIN NA TECHNIQUE - COME WITH ME IN A GRAPPLING SITUATION
By Grandmaster Stephen V. Colkett

Master Stephen Colkett (Top) has top mount on Sensei Joseph Colkett (1). Sensei Joseph reaches up to try gi choke and Master Colkett seizes and twists his hand (2). With his free hand Master Colkett chops into the crook of Sensei Joseph's arm bending it (3). Master Colkett places sensei's Joseph elbow into his belly and flexes sensei Joseph's wrist (4). To add extra pressure Master Colkett leans in placing weight on Sensei Joseph's arm submitting him (5).