The manufacturer's product page contains an official datasheet and images

The Wera 893/4/1 K Universal Bit Holder is used to hold and extend 1/4" bits in applications where the 50 mm blade length is suitable

optical and acoustic version)

Removal can be done with acetone according to technical guidelines

Bundle diameter (min / max): 3

Sugearm 50mm 575x475mm AS ESD til væg/loft MIL56706101404 The manufacturer's product page containsProduct Overview This Alsident System 50 AS extraction arm is a wall or ceiling mounted extraction arm designed for local extraction. The product is supplied by ALSIDENT and is specified in the manufacturer's technical documentation with a focus on conductive materials and easy cleaning. Design and Materials Tubes in chromated TCP aluminium for permanent conductivity Conductive, impact resistant, and chemical resistant polypropylene (PP) in the joints