countersunk/raised head self tap screw

stainless steel, pointed, self tap screw, slot head. stocked in the following sizes. price per packet of 50 pieces.
13mm x 4g - £2.66
13mm x 6g - £3.56
16mm x 4g - £3.26
16mm x 6g - £3.40
16mm x 8g - £4.35
19mm x 4g - £3.16
19mm x 6g - £4.60
19mm x 8g - £5.90
25mm x 4g - £4.60
25mm x 6g - £4.90
25mm x 8g - £7.50
32mm x 6g - £5.30
32mm x 8g - £6.75
38mm x 8g - £8.20