THE ROHM MODEL BB13-3 IS A PRECISION DRILL CHUCK DESIGNED FOR TOOLING AND ACCESSORIES APPLICATIONS. THIS UNIT FEATURES AN R8 HOLDER ARBOR FOR SECURE MOUNTING AND OFFERS A DRILLING CAPACITY RANGE FROM 1/32 INCH UP TO 1/2 INCH. THE CHUCK IS IDENTIFIED BY THE PART NUMBER BB13-3 AND REQUIRES A K3 KEY FOR ADJUSTMENT AND OPERATION.