The Aluminium oxide ones are pretty handy for around the workshop and may come in after Xmas for those decorating jobs,
Sheet size 230x280mm open coat regular 'B' weight paper.
Suitable for cabinet and joinery work. 10 sheets in each pack.
This link is to 180Grit sheets, but other grit's (240, 150, 80 & 60) are also on offer at .64p for 10 sheets so search for "Silverline 10pk Grit Aluminium Oxide Hand Sheets" to get other sizes for your order. (some are on back order but if ordered now will come at this price)