PDL 694MSS Brushed stainless steel metal cover plates to fit PDL 600 series single switch plates (NOT worktop or architrave plates), 70 x 115mm. 
Note there are early versions of PDL600 power points (approximately 20-25 years old) that these plates will not fit: check that the power point switch toggles match these covers (17mm square), the early version used much smaller switches.
Tip: MSS brushed stainless steel and MBBZ brushed bronze are almost identical - unless the two cover plates are installed side by side they are almost impossible to tell apart