1.【Focus Adjustable】Through the knob,you can adjust the lens on the snoot to adjust the degree of focus and defocus,making the projection sharp or blurry.this will add different effects and moods. 2.【Note 1】The maximum output power of the LED fill light is preferably less than 300W,if the power of the fill light is greater than 300W and less than 500W,it is necessary to adjust the brightness of the fill light below to 70%. 3.【Note 2】Prolonged use generates heat,especially at higher light powers.our metal spotlight barrels also generate heat.avoid direct contact during prolonged use and gloves are recommended for safety.It is strictly prohibited to use incandescent lamp for a long time,and the single opening time can not exceed one minute when focusing 4.【Bowens Mount Snoot】Equipped with bowens mount,suits for most flash light,led lights or spotlights.compatible with Aputure Amaran 100DS 100XS 200XS 200DS 300C 300DII 300X,Godox SL60 Bowens Mount Light 5.【Premium Material】Made of high quality aluminium alloy,the connected screws and gobos are also made of aluminium alloy,not plastic.Kit Includes:Optical Snoot *1,Color Filters *5,Gobo *35. 6.【Applications 】optical snoot kit enables you to project color effects/patterns onto subject,person or background,producing creative or cinematic effects.suits for business shooting,portrait photography,studio,wedding and most shooting cases.