These knipex internal bent circlip pliers are made with a special tool steel construction with pvc dipped handles for added comfort durability and most importantly added grip the knipex circlip plier range comes in internal external straight and bent versions these knipex 48 21 series internal circlip pliers with 90 bent tips are ideal for confined areas with the slim head style design they are constructed from chrome vanadium electric steel forged with precision non slip tips for added strengt