In the category 3a you can buy more than 0 photographic product such as the , all available from Cathedral Cameras
Canon ML/ADAP58 Macrolite adapter 58mm (for filter thread mounting)
Macrolite adapter 58C. ..
£15.29 Ex Tax: £12.74
Telecam 3.5mm Jack Plug to 3.5mm Jack Plug 1.5M
£3.68 Ex Tax: £3.07