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 - £2.65
13mm x 6g - £3.25
16mm x 4g - £2.80
16mm x 6g - £3.40
16mm x 8g - £4.35
19mm x 4g - £3.10
19mm x 6g - £3.55
19mm x 8g - £4.60
25mm x 4g - £3.40
25mm x 6g - £4.50
25mm x 8g - £5.55
32mm x 6g - £5.55
32mm x 8g - £6.75
38mm x 8g - £7.65