Letters that make countersink bit
s, o, b, e, k, n, c, r, t, i, u are letters that make 'countersink bit'
Words within countersink bit
sink, ER, ink, IT, te, si, NT, UN, countersink, SI, counter, in, count, sin, bit, CO, IN, Sin, Bi, Co, Er, In, Si, Te are words within 'countersink bit'