In need the following collet
Modified collets and nosepiece of the Mk. 1A. Based on the Schaublin ESX design, these collets were developed with the express intention of providing a superior grip on the shanks of cutting tools.
An important part of the new assembly was a freely-floating compensating washer which fitted between the collet and nose cap; this was intended to eliminate possible inaccuracies between the locknut thread and its inner surface which clamped against the collet.-info from Tony at
http://www.lathes.co.uk/linley/page3.html