Pentel studio set pentel s360pp 35a the pentel arts studio set is a handy see through acetate carry case containing 40 arts products it holds 35 quality s360 fibre tipped pens which are ideal for graphics and illustrations and 5 vivid highlighter pens the s360 colour pen is a superior general purpose art and graphics pen with a quality durable fibre tip and vivid water based ink the set contains 35 mixed colours with a fine point with a line width of approximately 1 2mm the 5