Ikhethetha yebhaluni ye-OTW ihlanganisa imikhiqizo emithathu: ibhaluni elingu-0.014-OTW, ibhaluni elingu-0.018-OTW, nebhaluni elingu-0.035-OTW eliklanyelwe ngokulandelana okungu-0.014inch, 0.018inch, kanye nentambo yomhlahlandlela engu-0.035inch.Umkhiqizo ngamunye uqukethe ibhaluni, ithiphu, ishubhu elingaphakathi, indandatho yokuthuthuka, ishubhu yangaphandle, ishubhu lokucindezeleka elisabalele, isixhumi esimise okuka-Y, nezinye izakhi.