As a Specialist job on RF Online you can craft weapon (throwing knife) with these recipe :

Image	Item Name	Weapon Level	Required Craft PT	Material
	Throwing Knife	5	1	4 1
	Throwing Cutter	10	7	3 1 1
	Roundly Knife	15	13	7 2 1
	Seeker	20	22	14 5 2
	Harpe	25	31	27 8 3
	Beam Seeker	30	42	8 10 4 4
	Throwing Breaker	35	55	12 16 6 6
	Throwing Beam Cutter	40	68	18 24 8 8
	Beam Harpe	45	83	6 27 9 9 9
	Throwing Hora Knife	50	99	7 41 14 14 14
	Dark Wing	55	99	10 59 20 20 20
	Sagan Wing	63	99	140 47 47 189 7
	Saint Wing	65	99	140 63 63 252 14
	Advanced Saint Wing	67	99	140 78 78 315 21
	Patron Wing	70	99	140 94 94 378 35